P8.5B (LO 3) (Compute FIFO, LIFO, and Average Cost) Some of the information found on a detail inventory card for Arctic Inc. for the first month of operations is as follows: Instructions (a) From these data compute the ending inventory on each of the following bases. Assume that periodic inventory records are kept in units only. Carry unit costs to the nearest cent and ending inventory to the nearest dollar. (1) First-in, first-out (FIFO). (2) Last-in, first-out (LIFO). (3) Average-cost. (b) If the periodic inventory record is kept in dollars, and costs are computed at the time of each withdrawal, would the amounts shown as ending inventory in (1), (2), and (3) above be the same? Explain and compute. (Round average unit costs to four decimal places.)